Ivalve yesango: Ivalve yesango yisivalo esisebenzisa isango (ipleyiti yesango) ukuhamba ngokuthe nkqo kwi-axis yepaseji. Isetyenziselwa ikakhulu kwimibhobho yokuhlukanisa i-medium, oko kukuthi, evulekile ngokupheleleyo okanye evaliwe ngokupheleleyo. Ngokuqhelekileyo, iivalve zesango azifanelekanga ukulawula ukuhamba. Zingasetyenziselwa zombini ubushushu obuphantsi kunye nobushushu obuphezulu kunye nezicelo zoxinzelelo, kuxhomekeke kwisixhobo sevalve.
Nangona kunjalo, iivalvu zesango azisetyenziswa ngokubanzi kwimibhobho ehambisa uludaka okanye imidiya efanayo.
Izinto eziluncedo:
Ukuxhathisa ulwelo oluphantsi.
Ifuna itorque encinci ukuvula nokuvala.
Ingasetyenziselwa kwiinkqubo zokuhamba kwe-bidirectional, evumela ukuba i-medium ihambe kumacala omabini.
Xa ivuleke ngokupheleleyo, umphezulu wokutywina awufane ube nokhukuliseko olusuka kwindawo yokusebenza xa kuthelekiswa neevalvu zeglowubhu.
Isakhiwo esilula kunye nenkqubo yokuvelisa kakuhle.
Ubude besakhiwo esibambeneyo.
Izinto ezingeloncedo:
Imilinganiselo emikhulu kunye nesithuba sofakelo siyafuneka.
Ukukhuhlana okuphezulu kunye nokunxiba phakathi kwemiphezulu yokutywina ngexesha lokuvula nokuvalwa, ngakumbi kumaqondo obushushu aphezulu.
Iivalvu zesango zihlala zinemigangatho emibini yokutywina, enokunyusa ubunzima ekuqhubeni, ekugayeni nasekugcineni.
Ixesha elide lokuvula kunye nokuvala.
Ivalve yebhabhathane: Ivalve yebhabhathane yivalve esebenzisa idisc-shaped closure element ukujikeleza malunga nama-90 degrees ukuvula, ukuvala, nokulawula ukuhamba kwamanzi.
Izinto eziluncedo:
Ulwakhiwo olulula, ubungakanani obubambeneyo, bukhaphukhaphu, kunye nokusetyenziswa kwezinto eziphantsi, oko kuyenza ilungele iivalvu ezinobubanzi obukhulu.
Ukuvulwa ngokukhawuleza kunye nokuvala kunye nokumelana nokuhamba okuphantsi.
Inokuphatha imidiya ngamasuntswana aqinileyo kwaye ingasetyenziselwa i-powdery kunye ne-granular media ngokuxhomekeke kumandla omgangatho wokutywina.
Ifanelekile ukuvulwa kwe-bidirectional, ukuvala, kunye nokulawulwa kwimibhobho yokuphuma komoya kunye nokususa uthuli. Isetyenziswa kakhulu kwi-metallurgy, ishishini elikhanyayo, amandla, kunye neenkqubo zepetrochemical kwimibhobho yegesi kunye neendlela zamanzi.
Izinto ezingeloncedo:
Uluhlu lolawulo lokuhamba olulinganiselweyo; xa i-valve ivuliwe ngama-30%, izinga lokuhamba liya kudlula i-95%.
Ayifanelekanga kwiinkqubo zemibhobho ephezulu kunye noxinzelelo oluphezulu ngenxa yokulinganiselwa kwisakhiwo kunye nezixhobo zokutywinwa. Ngokuqhelekileyo, isebenza kumaqondo okushisa angaphantsi kwe-300 ° C kunye ne-PN40 okanye ngaphantsi.
Ukusebenza kokutywina okuphantsi xa kuthelekiswa neevalvu zebhola kunye neevalvu zeglowubhu, kungoko ayilunganga usetyenziso olunemfuno zokutywinwa okuphezulu.
Ivalve yebhola: Ivalve yebhola ithathwe kwivalve yeplagi, kwaye into yayo yokuvala iyingqukuva ejikeleza i-90 degrees kwi-axis ye-axis.ivalveisiqu ukuphumeza ukuvula nokuvalwa. Ivalve yebhola isetyenziswa ikakhulu kwimibhobho yokuvala, ukusasazwa, kunye nokutshintsha indlela yokuhamba. Iivalvu zebhola ezinemilo engu-V yokuvuleka nazo zinamandla okulawula ukuhamba kakuhle.
Izinto eziluncedo:
Ukuchasana nokuhamba okuncinci (ngokucacileyo zero).
Ukusetyenziswa okuthembekileyo kwimithombo yeendaba ezonakalisayo kunye nolwelo oluphantsi lokubilisa njengoko lungabambeleli ngexesha lokusebenza (ngaphandle kokuthambisa).
Ifezekisa ukutywinwa okupheleleyo ngaphakathi koluhlu olubanzi loxinzelelo kunye nobushushu.
Ukuvula ngokukhawuleza kunye nokuvala, kunye nezakhiwo ezithile ezinexesha lokuvula / lokuvala elifutshane njenge-0.05 ukuya kwi-0.1 imizuzwana, ezifanelekileyo kwiinkqubo zokuzenzekelayo kwiibhentshi zokuvavanya ngaphandle kwempembelelo ngexesha lokusebenza.
Ukuzimisa okuzenzekelayo kwindawo yokubeka imida ngenqaku lokuvala ibhola.
Ukutywinwa okuthembekileyo kumacala omabini omsebenzi osebenzayo.
Akukho khukuliseko lokutywinwa kwemiphezulu evela kwimidiya yesantya esiphezulu xa ivuleke ngokupheleleyo okanye ivaliwe.
Ulwakhiwo olubambeneyo kunye nolukhaphukhaphu, lusenza ukuba sibe sesona sakhiwo sifanelekileyo sevalve kwiinkqubo zemidiya eziphantsi kobushushu.
Umzimba wevalve elinganayo, ngakumbi kulwakhiwo lwevalvu edityanisiweyo, inokumelana noxinzelelo olusuka kwimibhobho.
Into yokuvala inokumelana nokuhluka koxinzelelo oluphezulu ngexesha lokuvala. Iivalvu zebhola ezidityanisiweyo ngokupheleleyo zinokungcwatywa phantsi komhlaba, ukuqinisekisa ukuba iinxalenye zangaphakathi azikhukuliswanga, kunye nobomi benkonzo obuphezulu beminyaka engama-30, nto leyo ezenza zilungele imibhobho yeoli nerhasi.
Izinto ezingeloncedo:
Eyona nto ibalulekileyo yokutywina i-valve yebhola yi-polytetrafluoroethylene (PTFE), engasebenzi phantse kuzo zonke iikhemikhali kwaye ineempawu ezibanzi ezifana ne-coefficient ephantsi ye-friction, ukusebenza okuzinzileyo, ukuchasana nokuguga, ukufaneleka koluhlu olubanzi lobushushu, kunye nokusebenza okugqwesileyo kokutywinwa.
Nangona kunjalo, iipropathi ezibonakalayo ze-PTFE, kubandakanywa i-coefficient yokwandisa okuphezulu, uvakalelo lokuhamba okubandayo, kunye nokungahambi kakuhle kwe-thermal, kufuna uyilo lwezitywina zokuhlala ukuba lusekelwe kwezi mpawu. Ngoko ke, xa izinto zokutywina ziba nzima, ukuthembeka kwesitywina kuphazamisekile.
Ngaphezu koko, i-PTFE inomlinganiselo ophantsi wokumelana nobushushu kwaye ingasetyenziswa kuphela ngaphantsi kwe-180°C. Ngaphaya kolu bushushu, izinto zokutywina ziya kuguga. Ukuqwalasela ukusetyenziswa kwexesha elide, ngokuqhelekileyo ayisetyenziswanga ngaphezu kwe-120 ° C.
Ukusebenza kwayo kokulawula kungaphantsi kunoko kwevalve yeglowubhu, ngakumbi iivalve zepneumatic (okanye iivalve zombane).
Ivalve yeglowubhu: Ibhekisa kwivalve apho into yokuvala (ivalve disc) ihamba kumgca osembindini wesitulo. Ukwahluka kwe-orifice yokuhlala kuhambelana ngokuthe ngqo nohambo lwediski yevalve. Ngenxa yokuvula okufutshane kunye nohambo lokuvala lolu hlobo lwevalve kunye nomsebenzi walo othembekileyo wokuvala, kunye nobudlelwane obulinganayo phakathi kokuhluka kwendawo yokuhlala kunye nokuhamba kwediski ye-valve, ifanelekile kakhulu kulawulo lokuhamba. Ke ngoko, olu hlobo lwevalve luqhele ukusetyenziselwa ukuvala, ukulawulwa, kunye neenjongo zokubetha.
Izinto eziluncedo:
Ngethuba lokuvula kunye nenkqubo yokuvala, amandla okubetha phakathi kwe-disc ye-valve kunye ne-surface yokutywina ye-valve yomzimba incinci kune-valve yesango, okwenza kube nzima ukunxiba.
Ukuphakama kokuvula ngokuqhelekileyo kuphela yi-1/4 yesitulo sokuhlala, okwenza kube ncinane kakhulu kunevalve yesango.
Ngokuqhelekileyo, kukho indawo enye yokutywina kumzimba wevalve kunye nediski yevalve, okwenza kube lula ukwenza kunye nokulungiswa.
Inomgangatho ophezulu wokumelana nobushushu kuba ukupakishwa ngokuqhelekileyo ngumxube we-asbestos kunye negraphite. Iivalvu zeglobhu zidla ngokusetyenziswa kwiivalvu zomphunga.
Izinto ezingeloncedo:
Ngenxa yotshintsho kwicala lokuhamba kombindi ngevalve, ubuncinci bokunganyangeki kwevalve yeglowubhu iphezulu kunolo lwezinye iindidi zeevalvu.
Ngenxa yokubetha ixesha elide, isantya sokuvula sihamba kancinci xa kuthelekiswa nevalve yebhola.
I-valve yePlag: Ibhekisela kwivalve ejikelezayo enento yokuvala ngendlela yesilinda okanye iplagi yekhowuni. Iplagi yevalve kwi-valve yeplagi ijikeleziswa ngama-degrees angama-90 ukudibanisa okanye ukwahlula i-paseji kumzimba wevalve, ukuphumeza ukuvulwa okanye ukuvala i-valve. Ubume beplagi yevalve ingaba yi-cylindrical okanye i-conical. Umgaqo wayo ufana naleyo yevalve yebhola, eyaphuhliswa ngokusekelwe kwivalve yeplagi kwaye isetyenziswa kakhulu ekuxhatshazweni kwe-oilfield kunye namashishini epetrochemical.
I-Valve yoKhuseleko: Isebenza njengesixhobo sokukhusela ngokugqithisileyo kwiinqanawa ezinoxinzelelo, izixhobo, okanye iipayipi. Xa uxinzelelo ngaphakathi kwesixhobo, umkhumbi, okanye umbhobho udlula ixabiso elivumelekileyo, i-valve ivula ngokuzenzekelayo ukukhulula umthamo opheleleyo, ukuthintela ukwanda koxinzelelo. Xa uxinzelelo lwehla kwixabiso elichaziweyo, i-valve kufuneka ivale ngokuzenzekelayo ngokukhawuleza ukukhusela ukusebenza okukhuselekileyo kwezixhobo, umkhumbi, okanye umbhobho.
I-Steam Trap: Ekuthuthweni komphunga, umoya ocinezelweyo, kunye nolunye uhlobo lweendaba, amanzi e-condensate ayakhiwa. Ukuqinisekisa ukusebenza kakuhle kunye nokusebenza okukhuselekileyo kwesixhobo, kuyimfuneko ukukhupha ngexesha elifanelekileyo le midiya engenamsebenzi kunye neyingozi ukugcina ukusetyenziswa kunye nokusetyenziswa kwesixhobo. Inemisebenzi elandelayo: (1) Iyakwazi ukukhupha ngokukhawuleza amanzi e-condensate avelisiweyo. (2) Ithintela ukuvuza komphunga. (3) Iyasusa.
Uxinzelelo lokunciphisa iValve: Yivalve enciphisa uxinzelelo lokungena kwixinzelelo olufunwayo lokuphuma ngohlengahlengiso kwaye ixhomekeke kumandla ophakathi ngokwawo ukugcina ngokuzenzekelayo uxinzelelo oluzinzileyo lokuphuma.
Jonga iValve: Eyaziwa nangokuthi i-valve engabuyiyo, i-backflow preventer, i-valve yoxinzelelo lwangasemva, okanye i-valve yendlela enye. Ezi zivalo zivulwa ngokuzenzekelayo kwaye zivalwe ngamandla eveliswa ukuhamba kwe-medium kumbhobho, okwenza ukuba luhlobo lwevalve oluzenzekelayo. Iivalve zokujonga zisetyenziswa kwiinkqubo zemibhobho kunye nemisebenzi yazo ephambili kukuthintela umva ophakathi, ukuthintela ukuguqulwa kweempompo kunye neenjini zokuqhuba, kunye nokukhulula imidiya yesitya. Iivalvu zokutshekisha zingasetyenziswa kwimibhobho ebonelela ngeenkqubo ezincedisayo apho uxinzelelo lunokwenyuka ngaphezu koxinzelelo lwenkqubo. Zinokwahlulwa ikakhulu kuhlobo olujikelezayo (lujikeleza ngokusekwe kumbindi womxhuzulane) kunye nohlobo lokuphakamisa (uhamba nge-axis).
Ixesha lokuposa: Jun-03-2023
